[EN] METHOD OF MAKING PERFLUOROCYCLOBUTANE-CONTAINING MONOMER<br/>[FR] PROCÉDÉ DE FABRICATION D'UN MONOMÈRE CONTENANT DU PERFLUOROCYCLOBUTANE
申请人:SOLVAY SPECIALTY POLYMERS IT
公开号:WO2020229227A1
公开(公告)日:2020-11-19
The invention pertains to a multi-step process for making polyfunctional aromatic compounds comprising two phenyl rings bearing reactive groups susceptible of polycondensation reaction to provide polycondensed polymers, said method using economic raw materials, and possessing high selectivity and overall yield.
A new class of methacrylate monomers containing perfluorocyclobutyl unit was synthesized in multisteps including crossing-dimerization, demethylation and esterification using commercially available p-substituted phenol, tetrafluoroethylene and methacryloyl chloride as starting materials. These monomers can be polymerized in solution to provide perfluorocyclobutyl-based polymethacrylate, a kind of potential transparent material. (C) 2009 Elsevier B.V. All rights reserved.
PERFLUOROCYCLOBUTANE CROSSLINKED HYDROGELS
申请人:Thomas Brian
公开号:US20070154429A1
公开(公告)日:2007-07-05
This invention provides water-swellable articles and hydrogels that contain a hydrophilic polymer and perfluorocyclobutane crosslinking segments. The perfluorocyclobutane crosslinking segments are covalently attached to the polymeric chains of the hydrophilic polymer so that the crosslinking segments chemically link the polymeric chains to each other. The present invention also provides a method of making a crosslinked hydrogel by first attaching one or more substituted aromatic trifluorovinyl or aromatic trifluorovinyl ether moieties to a hydrophilic polymer to form a modified polymer and then heating the modified polymer at an elevated temperature to form perfluorocyclobutane segments from the trifluorovinyl or trifluorovinyl ether moieties. These water-swellable articles and hydrogels may be used in biomedical and pharmaceutical applications and may be suitable for implanted joint repair materials such as an articulating or bearing surface in a hip, knee, spine, finger, ankle, elbow, wrist, or shoulder joint.